REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenues from Franchised and Managed Hotels (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total revenues	$ 266,301	$ 277,669
Management fees
Disaggregation of Revenue [Line Items]
Total revenues	235	293
Franchise fees
Disaggregation of Revenue [Line Items]
Total revenues	1,044	932
Indirect reimbursements (system service fees)
Disaggregation of Revenue [Line Items]
Total revenues	1,190	1,185
Direct reimbursements
Disaggregation of Revenue [Line Items]
Total revenues	2,600	2,910
Total revenues from franchised and managed hotels
Disaggregation of Revenue [Line Items]
Total revenues	$ 5,069	$ 5,320